What is the main purpose of a torque wrench in automotive applications?

The main purpose of a torque wrench in automotive applications is to apply the correct amount of torque when fastening nuts and bolts. This is crucial because each bolt or nut has a specific torque specification that is essential for ensuring proper clamping force and securing components together without risking damage due to over-tightening or under-tightening. Using a torque wrench helps maintain the integrity of the assembly, ensuring that connections are made with the appropriate tightness required for safe and effective operation.

In automotive work, components such as cylinder heads, wheels, and suspension parts must be tightened to specific torque values to prevent issues like leaks, uneven wear, and mechanical failures. The torque wrench allows mechanics to achieve these specifications accurately, contributing to the reliability and safety of the vehicle.